No response after my complain

On 10 August the pump assistant at the Engen Garage Elarduspark did not replace or did not replace the oil cap on my car properly. All the oil blew out and the car's engine were damaged.<br> On Thursday 3 September I logged in a complain at hello Peter, because the assessor lacked response to go and look at the damage, and they made no decision as how to help me after they caused the damage to my car. The damaged car is my only vehicle and I had to rent a car from 18 August up to 12 September to be able to continue with my work. The amount of this rented vehicle is enormous, and as this was not my mistake I insist that Engen Elarduspark pay for the vehicle and the damage to my car's engine.<br> On 4 September a person from Engen headquarters phoned, gave me a reference number, logged in my complain and told me that the complain were send through to people who will contact me and will resolve this situation. It would happen in a certain amount of hours weekends excluded. Up till today 13/9/2015 nobody contact me and I am still in exactly the same situation as from 11 August. I am not satisfied at all and intend to go to the newspapers.